酶联免疫吸附试验(ELSA) Mix and transfer 0. 1ml Virus preparation Virus concentration abstract Substract Substract Substract conjugate 人 Primary antibody conjugate 小 Inhibitor ac Captue antibody Direct In Direct Sandwich Competitive酶联免疫吸附试验（ELISA） Virus preparation Virus concentration Direct InDirect Sandwich Competitive Ag Substract Primary antibody conjugate Secondary antibody conjugate Substract Substract Substract Captue antibody Inhibitor Ag